1. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

2. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

3. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

4. Who invented Proton ?

Answer:

Ernest Rutherford

5. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

6. Who invented c language

Answer:

Dennis Ritchie

7. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683